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        vue项目如何使用nginx配置跨域
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    <div class="meta">
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        <span itemprop="name">月光倾城的代码小屋</span>
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        <time datetime="2017-06-27T15:04:00.000Z" itemprop="datePublished">2017-06-27</time>
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        <a class="tag-link" href="/tags/vue/">vue</a>, <a class="tag-link" href="/tags/同花顺/">同花顺</a>
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    <p>最近使用 vue 开发一个功能，npm run build 之后打包的代码放在了 a.com.cn 下但是 php 接口部署在了 b.com 下，那么问题来了，如何让后端接口支持跨域。有两种方法：</p>
<ol>
<li><p>让后端在返回数据的时候设置下返回请求的 header，这种方法比较不稳定，因为接口一旦多了就得改好多代码，而且每次出了问题还得去找后端开发改代码，很烦。</p>
</li>
<li><p>另一种方法是，自己配置 nginx，首先 ssh 登录到部署接口所在的服务器，修改 nginx 配置，在 http 对象中加入两行代码：</p>
</li>
</ol>
<figure class="highlight nginx"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br></pre></td><td class="code"><pre><span class="line"><span class="section">http</span> &#123;</span><br><span class="line">  // 需要加入的代码</span><br><span class="line">  <span class="attribute">add_header</span> Access-Control-Allow-Origin http://a.com.cn</span><br><span class="line">  add_header Access-Control-Allow-Credentials <span class="literal">true</span></span><br><span class="line">  server &#123;</span><br><span class="line">    // b.com.cn的具体配置</span><br><span class="line">  &#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
<p>改完重启下 nginx，然后在 vue 项目中，在导入 axios 的地方加如以下代码：</p>
<figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">import</span> axios <span class="keyword">from</span> <span class="string">'axios'</span>;</span><br><span class="line">axios.defaults.withCredentials = <span class="literal">true</span>;</span><br></pre></td></tr></table></figure>
<p>然后测试，发现就可以跨域了。</p>

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